High pressure Sandwich Panel Machines

Modern building materials must meet key technical specifications including strength performance, density control, installation convenience, structural stability, and long-term durability. High-pressure polyurethane (PU) foam technology not only fulfills these requirements but also exhibits outstanding flame resistance and insulation properties. Due to these technical advantages, high-pressure PU materials are widely applied across multiple construction sectors, including cold chain storage, medical refrigeration, automotive manufacturing, sports arenas, and high-end residential projects. Our factory’s PU production line adopts high-pressure foaming technology, achieving industry-leading performance levels.

Advantages of High Pressure Sandwich Panel Line:

1. **Flame Resistance** – Complies with B2-grade fireproofing standards for building materials.
2. **Insulation Performance** – Meets thermal conductivity requirements for professional cold chain facilities.
3. **Advanced Mixing Process** – High-pressure blending ensures homogeneous material distribution, creating denser foam cell structures, improving product lifespan by **30%+**.
4. **Higher Material Efficiency** – Compared to low-pressure processes, **7-9% less raw material consumption**, significantly lowering production costs.
5. **Self-Cleaning Nozzle System** – Proprietary automatic cleaning eliminates manual maintenance, reducing downtime by **50%**.
6. **Intelligent Flying Cutting System** – Fully automated operation cuts labor costs by **60%**.
7. **Multi-Layer Pressure Monitoring** – Ensures **safe and stable** machine operation.

**Optional Product Configurations:**
1. **PU Composite Panels** (metal/PVC surface, Thickness: **18-22mm or 22-25mm**)
2. **Double-Metal Sheets** (standard **25mm & 50mm** thickness)

2 ensembles de décocheurs hydrauliques de 5 tonnes avec wagon de chargement

** Multi-Level Feeding System for Enhanced Roll Forming Performance**

Our unloading system to deliver synchronized material distribution to both upper and lower roll forming stations. This innovative stratification enables:

1. **Independent Material Management**
– Upper deck: Precision-calibrated for optimal feed to top-tier roll formers
– Lower deck: Engineered for flawless material routing to bottom-tier forming units

2. **Smart Flow Regulation Technology**
• Real-time feed rate adjustment through controlled mechanisms
• Embedded optical sensors for continuous material tracking

3. **Production Optimization Benefits**
– 10% reduction in material transfer fluctuations (vs conventional single-tier systems)
– Elimination of cross-tier interference through isolated control circuits

4.The system’s modular design allows seamless integration with existing roll forming lines while delivering:
✓ 8-9% throughput enhancement

This advancement represents a fundamental improvement in continuous manufacturing processes.

2 ensembles de machines de formage de rouleaux

Double Roll Forming Machine: Two of the most important machines on the production line are the double roll forming machines. They are essential to the production process because they ensure that the raw materials can be formed synchronously, accurately and efficiently. In order to meet the product requirements, the forming machine uses roll forming to process the raw materials into preset sizes and shapes.
The double-layer machine can be controlled by PLC, with two layers produced synchronously, or it can only run a single layer

The stable operation of this equipment not only improves production efficiency, but also ensures product consistency and excellent quality.

1 jeu de système de moussage PU à haute pression

**Principle and comparison of high-pressure foaming and low-pressure foaming of polyurethane**

1. Low-Pressure Foaming
Principle:
Mechanical mixing: Mix material A (isocyanate) and material B (polyol + additives) by low-speed stirring (200-1000 rpm), and inject them into the mold by gravity or low pressure.
Chemical reaction: Isocyanate (-NCO) reacts with polyol (-OH) to form polyurethane, accompanied by the formation of CO₂ bubbles (foaming agent effect).
Caractéristiques :
– The mixing accuracy is low, and problems such as uneven bubbles and inconsistent density are prone to occur.

2. High-Pressure Foaming
Principle:
High-pressure impact mixing: A and B materials are accurately measured under high pressure (100-200 bar) and instantly mixed (mixing time <1ms) by high-precision collision mixing heads (such as Hennecke, Cannon).
-Atomization mixing: High pressure makes the raw materials atomized to ensure uniform mixing at the molecular level.

Core advantages of high-pressure foaming:
1. More uniform mixing and finer pores
– High-pressure atomization can reduce dead zones and avoid defects caused by unmixed materials (such as lumps and uneven bubbles).
2. Higher production efficiency
– Suitable for automated continuous production.
3. Less material waste
– The mixing head is self-cleaning, with a residual amount of <0.1%, which reduces raw material loss and can save 7-9% of raw materials compared to low-pressure foaming.
4. Better product performance
– The pore structure is more uniform.

High-pressure foaming technology is superior to low-pressure foaming in terms of mixing accuracy, production efficiency and product performance, and is particularly suitable for high-end manufacturing.

1 ensemble de machine d'accueil de pu

La longueur de l'armature principale en PU est généralement de 25 à 30 mètres, déterminée par les dessins fournis par le client et l'épaisseur de mousse requise. Afin de mieux répondre aux besoins de production des clients, l'équipement est conçu en tenant pleinement compte de la diversité et de la flexibilité des différentes spécifications des produits, de manière à pouvoir s'adapter à divers scénarios de production.

Notre châssis principal adopte un système de transmission par courroie en caoutchouc, qui non seulement assure la stabilité et l'efficacité de l'équipement pendant son fonctionnement, mais réduit également de manière significative le coût de fabrication de la machine. Par rapport aux méthodes de transmission traditionnelles, les courroies en caoutchouc sont excellentes en termes d'absorption des chocs et de résistance à l'usure, ce qui permet de prolonger la durée de vie de l'équipement, de réduire la fréquence de la maintenance et d'économiser les coûts d'exploitation ultérieurs pour les entreprises.

1 Ensemble complet de systèmes de contrôle PLC

L'ensemble de la machine principale se compose de trois parties : la machine de formage de rouleaux, le système de moussage du PU et le système de cisaillement. Chaque partie dispose d'un système de contrôle électronique indépendant et les trois systèmes peuvent être exploités intelligemment en ligne.

1 Système de coupe à la volée

Système de découpe à servomoteur : Le système de découpe utilise un servomoteur de haute précision pour assurer la découpe précise des feuilles de polyuréthane. Il peut découper rapidement, précisément et de manière stable des matériaux de tailles et d'exigences diverses. Il est également équipé d'un collecteur de poussière spécial, hygiénique et esthétique.